383445 has 12 divisors (see below), whose sum is σ = 664716. Its totient is φ = 204480.

The previous prime is 383429. The next prime is 383459. The reversal of 383445 is 544383.

It is a happy number.

383445 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 221841 = 402^2 + 471^2 .

It is not a de Polignac number, because 383445 - 2⁴ = 383429 is a prime.

It is a super-3 number, since 3×383445³ = 169133833301538375, which contains 333 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4216 + ... + 4305.

It is an arithmetic number, because the mean of its divisors is an integer number (55393).

2³⁸³⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

383445 is a deficient number, since it is larger than the sum of its proper divisors (281271).

383445 is a wasteful number, since it uses less digits than its factorization.

383445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532 (or 8529 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 383445 is about 619.2293597691. The cubic root of 383445 is about 72.6497894013.

It can be divided in two parts, 383 and 445, that added together give a palindrome (828).

The spelling of 383445 in words is "three hundred eighty-three thousand, four hundred forty-five".